19708530009 has 8 divisors (see below), whose sum is σ = 30032045760. Its totient is φ = 11262017136.

The previous prime is 19708529989. The next prime is 19708530019. The reversal of 19708530009 is 90003580791.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19708530009 - 2¹⁶ = 19708464473 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19708530019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469250694 + ... + 469250735.

It is an arithmetic number, because the mean of its divisors is an integer number (3754005720).

Almost surely, 2^19708530009 is an apocalyptic number.

It is an amenable number.

19708530009 is a deficient number, since it is larger than the sum of its proper divisors (10323515751).

19708530009 is an equidigital number, since it uses as much as digits as its factorization.

19708530009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938501439.

The product of its (nonzero) digits is 68040, while the sum is 42.

The spelling of 19708530009 in words is "nineteen billion, seven hundred eight million, five hundred thirty thousand, nine".